<style>
    .red-text {
        color: rgb(255, 0, 0);
    }
    .orchid-text {
        color: rgb(218, 112, 214);
    }
    .sienna-text {
        color: rgb(160, 82, 45);
    }
    .blue-text {
        color: rgb(0, 0, 255);
    }
</style>

<h1 class="red-text">I am red!</h1>

<h1 class="orchid-text">I am orchid!</h1>

<h1 class="sienna-text">I am sienna!</h1>

<h1 class="blue-text">I am blue!</h1>